Clean, wash and cut the peppers into pieces. Cook in boiling salted water for 5 minutes. Clean and wash the zucchini and spring onions. Leek onions in pieces, zucchini in fine slices cut. Wash herbs, remove leaves from stems, chop if necessary. Put the pizza base mix in a bowl. Add 250 ml lukewarm water.
Work into a smooth dough with the dough hooks of the hand mixer and knead briefly with your hands. Roll out 2 round pizzas (approx. 28 cm Ø) on a lightly floured work surface. Place on 2 baking trays lined with baking paper. Spread with crème fraîche. Spread the prepared vegetables, mortadella and herbs on top. Season with salt and pepper and sprinkle with parmesan. Bake the pizzas either one after the other in a preheated oven (electric: 200 °C/ gas: level 3) for approx. 25 minutes, or together in a convection oven at approx. 175 °C also for 25 minutes